Merge branch 'pythonic_level1'

[etc/vim.git] / after / ftplugin / markdown.vim

diff --git a/after/ftplugin/markdown.vim b/after/ftplugin/markdown.vim
index f16d875f4127f596abf75dc4aa1ddf2a061ca8f8..9eee3c34eb11c473be23015ca57558a68372d435 100644 (file)
--- a/after/ftplugin/markdown.vim
+++ b/after/ftplugin/markdown.vim
@@ -1,3 +1,4 @@
+" vim: ts=4:
 " folding for Markdown headers, both styles (atx- and setex-)
 " http://daringfireball.net/projects/markdown/syntax#header
 "
@@ -14,26 +15,36 @@ endfunction
 if get(g:, "vim_markdown_folding_style_pythonic", 0)
     function! Foldexpr_markdown(lnum)
         let l1 = getline(a:lnum)
-        " keep track of fenced code blocks
+        "~~~~~ keep track of fenced code blocks ~~~~~
+               "If we hit a code block fence
         if l1 =~ '````*' || l1 =~ '\~\~\~\~*'
+                       " toggle the variable that says if we're in a code block
             if b:fenced_block == 0
                 let b:fenced_block = 1
             elseif b:fenced_block == 1
                 let b:fenced_block = 0
             endif
+               " else, if we're caring about front matter
         elseif g:vim_markdown_frontmatter == 1
+                       " if we're in front matter and not on line 1
             if b:front_matter == 1 && a:lnum > 2
                 let l0 = getline(a:lnum-1)
+                               " if the previous line fenced front matter
                 if l0 == '---'
+                                       " we must not be in front matter
                     let b:front_matter = 0
                 endif
+                       " else, if we're on line one
             elseif a:lnum == 1
+                               " if we hit a front matter fence
                 if l1 == '---'
+                                       " we're in the front matter
                     let b:front_matter = 1
                 endif
             endif
         endif
 
+               " if we're in a code block or front matter
         if b:fenced_block == 1 || b:front_matter == 1
             if a:lnum == 1
                 " fold any 'preamble'
@@ -45,17 +56,25 @@ if get(g:, "vim_markdown_folding_style_pythonic", 0)
         endif
 
         let l2 = getline(a:lnum+1)
+               " if the next line starts with two or more '='
+               " and is not code
         if l2 =~ '^==\+\s*' && !s:is_mkdCode(a:lnum+1)
             " next line is underlined (level 1)
             return '>0'
+               " else, if the nex line starts with two or more '-'
+               " and is not code
         elseif l2 =~ '^--\+\s*' && !s:is_mkdCode(a:lnum+1)
             " next line is underlined (level 2)
             return '>1'
         endif
 
+               "if we're on a non-code line starting with a pound sign
         if l1 =~ '^#' && !s:is_mkdCode(a:lnum)
-            " current line starts with hashes
-            return '>'.(matchend(l1, '^#\+') - 1)
+                       " set the fold level to the number of hashes -1
+            " return '>'.(matchend(l1, '^#\+') - 1)
+                       " set the fold level to the number of hashes
+            return '>'.(matchend(l1, '^#\+'))
+               " else, if we're on line 1
         elseif a:lnum == 1
             " fold any 'preamble'
             return '>1'
@@ -76,7 +95,7 @@ if get(g:, "vim_markdown_folding_style_pythonic", 0)
         let fillcharcount = windowwidth - len(line) - len(foldedlinecount) + 1
         return line . ' ' . repeat("-", fillcharcount) . ' ' . foldedlinecount
     endfunction
-else
+else " vim_markdown_folding_style_pythonic == 1
     function! Foldexpr_markdown(lnum)
         if (a:lnum == 1)
             let l0 = ''
@@ -114,7 +133,7 @@ else
             return '>1'
         elseif l2 =~ '^--\+\s*' && !s:is_mkdCode(a:lnum+1)
             " next line is underlined (level 2)
-            if g:vim_markdown_folding_level >= 2
+            if s:vim_markdown_folding_level >= 2
                 return '>1'
             else
                 return '>2'
@@ -124,9 +143,12 @@ else
         let l1 = getline(a:lnum)
         if l1 =~ '^#' && !s:is_mkdCode(a:lnum)
             " fold level according to option
-            let l:level = matchend(l1, '^#\+')
-            if g:vim_markdown_folding_level == 1 || l:level > g:vim_markdown_folding_level
-                return -1
+            if s:vim_markdown_folding_level == 1 || matchend(l1, '^#\+') > s:vim_markdown_folding_level
+                if a:lnum == line('$')
+                    return matchend(l1, '^#\+') - 1
+                else
+                    return -1
+                endif
             else
                 " headers are not folded
                 return 0
@@ -134,10 +156,10 @@ else
         endif
 
         if l0 =~ '^#' && !s:is_mkdCode(a:lnum-1)
-            " current line starts with hashes
+            " previous line starts with hashes
             return '>'.matchend(l0, '^#\+')
         else
-            " fold here because of setext headers
+            " keep previous foldlevel
             return '='
         endif
     endfunction
@@ -146,12 +168,22 @@ endif
 
 let b:fenced_block = 0
 let b:front_matter = 0
-let g:vim_markdown_folding_level = get(g:, "vim_markdown_folding_level", 1)
+let s:vim_markdown_folding_level = get(g:, "vim_markdown_folding_level", 1)
 
-if !get(g:, "vim_markdown_folding_disabled", 0)
-    setlocal foldexpr=Foldexpr_markdown(v:lnum)
-    setlocal foldmethod=expr
-    if get(g:, "vim_markdown_folding_style_pythonic", 0)
-        setlocal foldtext=Foldtext_markdown()
-    endif
-endif
+function! s:MarkdownSetupFolding()
+  if !get(g:, "vim_markdown_folding_disabled", 0)
+      setlocal foldexpr=Foldexpr_markdown(v:lnum)
+      setlocal foldmethod=expr
+      if get(g:, "vim_markdown_folding_style_pythonic", 0) && get(g:, "vim_markdown_override_foldtext", 1)
+          setlocal foldtext=Foldtext_markdown()
+      endif
+  endif
+endfunction
+call s:MarkdownSetupFolding()
+augroup Mkd
+    " These autocmds need to be kept in sync with the autocmds calling
+    " s:MarkdownRefreshSyntax in ftplugin/markdown.vim.
+    autocmd BufWinEnter,BufWritePost <buffer> call s:MarkdownSetupFolding()
+    autocmd InsertEnter,InsertLeave <buffer> call s:MarkdownSetupFolding()
+    autocmd CursorHold,CursorHoldI <buffer> call s:MarkdownSetupFolding()
+augroup END